Answer:
People buy me to eat but never eat me. What am I?
I run smoother than any rhyme, I love to fall but cannot climb. What am I?
Until I am measured, I am not known. Yet, how you miss me when I have flown. What Am I?
I am flora, not fauna. I am foliage, not trees. I am shrubbery, not grass. What am I?
What comes once in a year twice in a week but never in a day?
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.